Combination of base units for optical readers



FIG. 1 is a perspective front and top view of a combination of baseunits for optical readers showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is an exploded perspective view thereof.

The ornamental design for a combination of base units for opticalreaders, as shown and described.